Cushion tire



` W. A, BRUBAKER.

CUSHION TIRE.

APPLICATION FILED Diaw, 1921.

WILLIAM A. B RUBAKER, or AKRON, omo.

CUSHION TIRE, I

A,iii/.1.352.

0 all 'whom 'it may concern: Be itA known that I, WILLIAM A. BRU- BAKER, a citizen of the United States, -resid`- ing at Akron, inthe county ol' Summit and State of Ohio, lhave invented new-and iiseful Improvements in Cushion yirllirc's, ot"v which the following is a specification..

This invention relates to new and useful improvements in elastictires forwhee'ls land has particular relation to anew and novel tireof the cushion type especially adapted forV use `on the *y wheelswo't' self-propelledA vehicles v i' Objects of the invention are tol providel a strong durable tire which may be .maniifacf f tiired at alow cost and which will. provide eflicient means for absorbing shocks and j ars occasioned by. the progress of a vehicle over a` rough and uneven surface.v 7 v.Further .objects are to provide 'a'- tire hav- Iing 'a circumtei'e'ntially extending seriesof openings projecting .therein from each lateral side-thereof so as to provide a` tire havingr a circuniferentially arranged,'compressiblo portion which will be subjected 'to dis` tortion when the tire is under load 'and to alternately arrange the openings in one'side in respect to the openings' on the otherfso that .the `said-portion' will lbe uniformly fcomprcssible l, 4 n y y .A stillurther.Objectis to `provide/a tire having openings arranged 1 thereinv as above set -fort-h and to provide al centrally posi tioiied circuiniereiitially extending zig-Zag solid portionwhicli will b'e extremely eflicieiit distortion' `when l the tire'is subject to an Iaxially'directed strain;y v l rllhe above` and additional objects Aare accomplished by the novel construction, coniloination and arrangement of parts hereiniid modifications after described and panving drawing, wlierein'l have shown a preferred embodiment of the invention, it being iinderstood'that the invention'. is jcapale of various adaptations and thatchanges may bei'nade er substitutions resorted to which come within the scope of theY claims hereunto appended. Inthe drawings in4 which similar numerals of reference have been used to denoteidentical parts as the same appear in the several views and in Whichv a .perspective view -of a portion of a vehicle tireconstrucrted in accordance lwith this inventionjaiidalso s 'howi'ngav Figure `l is Specification of Letters Patent. ppncation sied December 29, Y1921.

. transverse sectional tire body 2.

the tire are alternately disposed infrelal .running with the radius ofthe;

illustrated in the acc'omeessuen PaLeiinelLApl. 25',i'1952. f 'serial No. 525,553.

View taken on line 1-' -1 of Figure 2. l .Figure-2 is a'horizontal, sectional view of sametaken as indicated lby the line ,2f-726i 6 Figure y1. 'y f Q In the drawings the numeral` lis i'i'sfed to denote' a tire rim vto which isy vulcanized or otherwise suitably secured an annular elastic The' numeral 3 is used'tojde 65 note the peripheral ortread 'portion' ofthe tire andthe numeral 4 the base or Vportion i.,

of the tire lying adjalcentthe rim 2,1; ','lllie tire body is provided; on each lateral 'side with "a circiimferentially extending series' of i'fegularly*recurringY holes'o whichl u into-the "tire body inparallelilaytion ie i axis-of the' tire toa point r'a'ppr'oxiifnately central' thereof.' The holesff inl one'sidefpf fion The

to the holes in 'the otherside thereo.

holes are preferably V polygonal cross f, u l

sectional contour and each hole is provided with the .inner wall 6 andthe outer wall'7, which are disposedin'yparallel spaced,relam tion at a right angle toa radius of the't're passing tliroiigli the center of; ther Opilling, llf'hileeach hole 'is ishsiibf'- guiar in cross sectional vCdn,

stantially rectan tour' being provided" with 4 the; walls,` ,6, 8.3: and 9 "\'vhich are rectangiilarly arangdil. relation toeacli other. ach' hole''5 isy further.. W provided with the relatively'V narrow walls 14,' 15,16 and 17 i which are rectangularlyarranged in relation to eachother. 4 and are alternately disposed in A'relation to lthe Walls; G, 7, 8- and 9. Eachgopening fisprovidedA at. its inner projecting('end-with thet'end, walls l() v.and 11 which,l meet`l alongfa line;v positioned centrallypf the tii'e body.. and2v tire,y The wall.- 10 iiitcrsects tli e wall 8 at an. ci? obtuse angloza'nd tlieivall 1 1 ligkewiseinterf; sects thewall 9 at a similar anglex/Eath of the walls l() and ll are parallelly disposed in relation to an end wall of a similar recess in the other sideof the tire. The eiid wall 10 of each hole or recess 5 in the side A ,of said tire is thus disposed in parallel spaced relation to the end wall 11 of a recess 5 in the other side B and the end Wall 11 of said recess is disposed in parallelspaced relation to a wall 10 of a different recess on the side tially extending, zig-zag solid portion'i's thus '-forn'ie-d,I which forl the, purpose of this de been designated by the -numeral 12 and a rectangularly block-like portion 13 is thus formed between adjacent recesses` The portions 13 extend inwardly tothe ceny tral portion 12`and are alternately disposed relative tov a similar portion on the other side of Vthe tire. f

It will thus be seen that ll have provided s a tire structure having arranged therein a circumferentially extending series ,of recesses 5 which alternately project therein from each lateral side thereof so asto form a centerV portion provided with a circumferentiall extending series of regularly recurring s larp angles or turns and that the portions 13 extend from alternate angles in said center portion l12 to opposite sides of the tire.

The portions 13 between the recesses 5 "form blocks, each of which isrelatively ,a poi wider at its point of uncture with the inner and outer `portions of the tire body. The design and arrangement of the recesses or .holes 5 provide a compressible ortion which extends laterally and circum erentially of the tire and forms an area of compressibility which is very efiicient in withstanding both longitudinal .and lateral strains. v

Having thus illustrated my invention and described .the same in detail, what l claim as new and desire to I,secure by Letters- Patent is 1. A cushion tirefc/omprising an annular elastic body provided on each lateralside with a circumferentially extending series of recesses --which project into the tire body to `approximately central thereof, each recess being provided at its inner end with two walls 'which meet at an angle along a line' running with a radius ofthe tire and each of said walls being disposed in parallel relation to a similar wall of one of the recesses on the -other side ofthe tire.

2. A cushion tire comprising an annular elastic-body provided on eaclrlateral side with/ recesses which project ltherein to a point approximately central thereof in parallel spaced relation to the axis of the tire, the recesses on one side of the tire being alternately arranged in respect to the which intersect along a line running with a 'radius of the tire, said recesses being ar'- ranged to provide a solid portion which extends in a series of sharp -turns lcircumferentially of the tire. y

3. A tire comprising an annular elastic body having a plurality of holesin each of its sides, each of said holes having parallel side walls which terminate in spaced relation to the center of the tire body and each being provided with two end Awalls which. are disposed at an angleto said side walls and at an angle to each other lso as to intersect alonga line running with a radius of the tire.

4. A tire comprising an annular elastic body having a plurality of holes in each of its sides, each of said holes being, of uniform cross-sectional contour and extending into the tire body in parallel relation to the axis thereof, each hole provided at the inner end thereof with walls which are disposed at an angle to the axis of the tire and intersect along aline'running with aradius of the tire.

5 A tire comprising an annular elastic body having a plurality of holes in each of its sides, each 'of said holes being of uniform cross-sectional contour and extending into the tire body in parallel relation to the axis thereof, each hole provided fat the inner end ithereof with walls which are disposed at an angle to the axis of the tire and intersect along a line running with a,radius of the tire, each of said end walls being disposed. in spaced parallel relation to an end wall of a slmilar opening on the/other side of the tire.

6. ln a cushion tire, an annular elastic body including a solid base portion and a solid tread portion'and a compressible center portion concentrically arranged therebetween, said central portion disposed in a series of sharp angles forming a plurality of alternately disposed oblique truss members and provided with laterally directed truss." members which extend alternately from each angle in said central portion toiopposite sides ofthe tire.

In testimony whereof I have hereunto set 100 

